Site	State	PM AQI* (ug/m3)
Omak-Colville Tribe	WA	29
Maple Falls-Azure Way	WA	26
Sunnyside-S 16th	WA	22
Yakima-4th Ave	WA	20
Leavenworth-Evans St	WA	19
Burns - Washington St.	OR	16
John Day Dayton St	OR	15
Colville-E 1st St	WA	14
Darrington-Fir St	WA	12
Twisp-Ewell St	WA	11